Toroidal coil winding machine



y 8 R. FAHRBACH 3,383,039

TOROIDAL COIL WINDING MACHINE Filed March 22, 1965 ll Sheeizsdiheet l1'4 Z6 l5 {6 7 70 F f y o /0 F N 0& g

y l l o W IN VENTOR.

PUDOLF .FLHPBA C H A TTORNEY y 1968 R. FAHRBACH 3,383,059

TOROIDAL COIL WINDING MACHINE Filed March 22, 1965 11 Sheets-Sheet 2 m INVEN TOR.

BY PUDOLF Fl-IPBHCH I JMADKQBUL- HT TOPNEY May 14, 1968 R. FAHRBACHTOROIDAL COIL WINDING MACHINE 11 Sheets-Sheet- 3 Filed March 22, 1965INVENTOR.

Puoou FhHRaAcn Y A rromvsv May 14, 1968 R. FAHRBACH TOROIDAL COILWINDING MACHINE 11 Sheets-Sheet 4 Filed March 22, 1965 INVENTOR. PuooLFHHRBAcM ATTORNEY y 1968 R. F'AHRBACH 3,383,059

TOROIDAL COIL WINDING MACHINE Filed March 22, 1965 11 Sheets-Sheet 6 /50INVENTOR. Puoou: Fnmancu 4 TTOPNE Y y 1968 R. FAHRBACH 3,383,059

TOROIDAL COIL WINDING MACHINE Filed March 22, 1965 ll Sheets-$heet '7INVENTOR. Puoau: FAHRBACM 44 3 j BY L (j 2 W ATTORNEY ay 14, 1968 R.FAHRBACH 3,383,059

TOROIDAL COIL WINDING MACHINE Filed March 22, 1965 11 Sheets-Sheet 8INVENTOR PuuoLF F meancg ATTORNEY ay 14, 1968 R. FAHRBACH 3,383,059

TOROIDAL COIL WINDING MACHINE Filed March 22, 1965 Jj4SheetsSheet 9INVENTOR RUDOLF EHRBACR ATTORNEY y 1968 R. FAHRBACH 3,383,059

TOROIDAL COIL WINDING MACHINE l1 Sheets-Sheet 10 Filed March 22, 1965INVENTOR. UDOLF EHPBH ck ATTORNEY May 14, 1968 R. FAHRBACH TOROIDAL COILWINDING MACHINE ll Sheets-Sheet 11 Filed March 22, 1965 INVENTOR. PuDoLFFHHRBA CK QTTORNEY United States Patent 3,383,059 TOROIDAL COIL WINDINGMACHINE Rudolf Fahrbach, Union, N.J., assignor to UniversalManufacturing Co. Inc., Irvington, N.J., a corporation of New JerseyFiled Mar. 22, 1965, Ser. No. 441,472 Claims. (Cl. 2424) This inventionrelates to winding and reeling apparatus and is directed moreparticularly to the ring winding of toroidal coils.

The winding of toroidal coils has long been known. For many years, allapparatus for doing this work employed a unitary, integrated assembly ofpower and winding elements which were individually and separatelysupported on and affixed to the frame of the winding machine. Each ofthese assemblies was so constituted that it was capable of winding onlya limited range of coil sizes or a particular form of coil winding. Whena different size or type of coil outside the range of the machine, wasrequired it became necessary to remove the winding head which happenedto be on the machine and substitute therefor a different winding headcapable of carrying out the newly desired operation. Such a change overrequired that the winding head part of the assembly be removed from theremaining parts of the machine. This entailed unbolting the power drivetherefrom, and a reassembly of the parts with an appropriate windinghead, followed by a realignment and the establishment of a newconnection between the prime mover and the new winding head.

The art of winding toroidal coils, particularly when wire of a widerange of sizes e.g., No. 40 AWG to No. AWG is required, dictatesaccurate assembly of parts in order that the machine will functionsmoothly for long periods of time and under heavy duty. Consequently,great care had to be exercised in reassembling the parts duringchangeover, in order that all the critical requirements of suchoperation would be performed. This required considerable time forshut-down of the machine before the new winding head was ready foroperation. In practice, it was not uncommon that such a changeover required a shut-down of an hour or more and had to be done by skilledoperatives.

Many toroidal coils especially of the larger dimensions such as coils of1 /8" inside diameter to 14" outside diameter need tape wound over thecompleted coil for a protective covering. The tape is made of fabric,paper or plastic material in ribbon form of widths in the order of /2"to 1". It is present practice to have tape applied to toroidal coils bymachines designed for that function. To the manufacturer of such coils,this is an expensive capital investment since the taping operations arerelatively infrequent but nevertheless essential. Heretofore theproblems of combining into a single machine capable of being used as auniversal machine for both wire winding and tape winding have remainedunsolved. Among the problems involved are the geometric difference ofwire and tape and the wide range of coil sizes and weights that areneeded to be wound by these various materials.

It is the principal object of this invention to provide a toroidal coilwinding machine having a common base and power source capable of windinga wide range of toroidal coil sizes and covering them with tape. It is afeature of my invention to arrange the basic table upon which the coresare mounted for winding with an extension means for carrying largercores of greater weight. It is a further feature of the invention thatthe basic table has means for centering the core in general to a desiredgeometric center and further to adjust the table after the core has beencentered to refined precision.

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It is still a further feature of the invention to provide a counter ofthe material being used to wind upon the core whether it be wire or tapeand to provide means for cutting the material at a predetermined lengthrequired for the winding operation.

Other and further objects and features will appear from the followingdescription.

In the accompanying drawing to which reference is made in the followingdetailed description of one embodiment of the invention and in whichlike reference characters indicate like parts in the various views:

FIGURE 1 is an elevation view in perspective of the machine in operationand an indication in phantom of the machine adjusted for extendedoperation for larger coil cores;

FIGURE 2 is a side elevation of the upper portion of the machine as seenfrom the right side of FIGURE 1 with certain portions removed and otherportions shown in dotted line to emphasize certain hidden portionsthereof;

FIGURE 3 is a view of the machine taken along line 33 of FIGURE 2illustrating the core centering means;

FIGURE 4 is a view of the machine taken along line 44 of FIGURE 2 withparts removed as needed to show the three pedestals for supporting corecarrying rollers above the table illustrating the means for centeringthe core on the table;

FIGURE 5 is a view taken along line 5-5 of FIGURE 4 illustrating themanual means for rotating the core;

FIGURE 6 is a view on line 6-6 of FIGURE 4 illustrating details of thetension roller carriage;

FIGURE 7 is a view along line 77 of FIGURE 4 showing the detail on thepower drive connection for rotating the ring gear and for driving thetachometer with the magnetic clutch connections therefor;

FIGURE 8 is a view taken along line 88 of FIG- URE 2 illustrating thedetails of one of the five guide roll assemblies carrying the magazineand drive gear;

FIGURE 9 is a view taken along line 9-9 of FIG- URE 2 illustrating thedetail of the wire guide roll;

FIGURE 10 is a view taken along line 1010 of FIG- URE 2 illustrating thedetails for the loop counter;

FIGURE 11 is a view taken along line 1111, FIG. 2, illustrating thedetail of the footage counter;

FIGURE 12 is a view of the brake assembly for braking the magazinerotation illustrated as a fragmentary but enlarged portion of FIGURE 2showing the brake;

FIGURE 13 is a view of the details of mounting the brake on the frame asseen along lines 13-13 of FIG- URE 12;

FIGURE 14 is a side elevation view partly in section of the tableextension as seen from the right side of FIG- URE 1 there illustrated inphantom;

FIGURE 15 is a top view of the roller table extension as seen along line1515 of FIGURE 14;

FIGURE 16 is a view of the tension roller carriage taken along line16-16 of FIGURE 6, and

FIGURE 17 illustrates a schematic of the tape cutter.

Referring now to FIGURE 1 there is illustrated a toroidal coil Windingmachine with one of a plurality of winding heads in place, winding acore. The cabinet 10 includes the motor and motor-drive used for thepower source for the machine operation including electrical connectionsand gear trains therefrom. Screen 12 provides ventilation to theinterior of the housing. Above the housing is a base stationary plate15. Across the top of the housing on the forward end of the unit abovethe base plate is a housing 16 containing the mechanism forautomatically controlling the feed position of the core to be wound suchas core 42. A roller table 17 is disposed over the housing 16 andcarries the two drive roll assemblies on columns 22 and 24 respectivelyand support 20 for the tension roll assembly. The roller assembliescarry a core 42 in horizontal position on which turns are wound to theselected plurality linked from within the magazine and gear assembly 18.This assembly, also known in the art as a winding head, according tothis invention is easily mounted on the machine and is quicklyreplaceable by a corresponding Winding head of larger or smaller coresize capability. A hand operated wheel 11 is provided for rotating acore 42 to a desired azimuth. Hand wheel 40 adjusts the tension ofspring 240 (FIG. 16) on tension roll assern bly 20. Hand wheel 14 oncontrol box 13 provides manual selection of the speed of the feedcontrol. Post 28 supports the various spools and guides required tosupply or guide the Wire or tape to the winding head. On the post 28 ismounted a bracket 34 carrying a supply of fine wire on spool 36 shownsupplying fine wire 38 over guide 39 over wire guide roller 43 on to themagazine 44. A spool 46 for carrying tape is mounted on the upper end ofpost 28. Footage counter assembly 190 and tape cutting assembly 194 aremounted on post 28. Gear housing cover 48 contains the power gear trainfor driving the ring gear 45 of the winding head 18. The tension rollassembly and one idler roll assembly is shown in phantom generallyindicated by reference numeral 26 for the means for providing theextension to the roller table for larger cores than that indicated bythe core 42.

Referring now to the more detailed illustrations of the embodiment beingdescribed, the view as shown in FIG- URE shows the automatic feedhousing 16. Column 24 for the drive roller assembly mounted thereonrotates the roller within which a core portion 42 is mounted. The rollerassembly comprises the lower disc 50, lower roller 52, upper roller 54,upper disc 56 carrying a spring 58 between bearings 60 and 62 and locknut 64, vertically displaceable on the column 24 for adjusting thetension on the assembly. Column 24 is rotated from the motor drivewithin housing 16 by means of the gear train comprising gear 520 (FIGURE3) on the upper end of a shaft universally connected Within housingdrive not shown. The shaft connected to gear 520 is arranged to bedisplaceable in a limited degree to allow for displacement of the feedhousing 16 with respect to the table platform 15. Bevel gear 540 drivenby gear 520 rotates shaft 560 through U-bracket bearing 580 carryingworm 600 in meshed engagement with the teeth of gear 125. Gear 125 isrigidly connected to shaft 126 and rotates the gear train for drivingthe drive roller shaft 24 comprising gear 127, idlers 128, gears 129,and driver gears 130 (FIGS. 4 and 5). A similar gear train driven bygear 125 is similarly arranged to drive the column 22 for a similardrive roller assembly for another segment of the core 42.

The two drive roller assemblies driven by columns 22 and 24 respectivelyare positionable on the roller table 17 over the arcuate plates 620 and640 (FIGS. 4 and 5). They are positioned by rotation about the pivots 66and 68 respectively, the gear 130 (below plate 17) connected to column24 passing through the arcuate slots in plate 17, being in continuousmesh with gear 129 during the desired positioning of the rollerassemblies.

The tension roll assembly (FIG. 1) supported on column having mainroller is adjustable in a radial position with respect to the center ofthe roller table 17 by means of the hand wheel connected to the threadedshaft 41 in threaded engagement with the roller carriage 140 (FIGS. 4, 6and 16), which ride on tracks with wheels 138. Column 20 (FIG. 6) isreceived in the carriage 140 in bearing 142 and rides on ball bearing144 and is held by retaining ring 146.

Refined positioning or centering of the core once it has been positionedwithin the three points of the roller supports carried by columns 20, 22and 24 is effected by a pair of symmetrical linkages for rectangularcoordinate adjustment, best seen in FIG. 3. One coordinate adjustment iseffected by segment 70 rotated about pivot 72 by manual handle 74 alsopivotly connected to sprocket 75 provided with teeth for carrying achain 76 for driving a similar sprocket 77. On the sprockets 75 and 77respectively an eccentric stud is slidably fitted in parallel slots 73and 78 respectively, which slots are in the base plate member 16A of thehousing assembly 16. The segment (see also FIG. 1) is located below thebase plate 15 and is conveniently exposed to the operator through thehousing 10 for control by insertion of the lever 74 into any one of therecesses provided in the segment. Rotation of the segment causes thestud illustrated for movement in the slots 73 and 78 to slide in aneccentric fashion with respect to the sprockets and 77 to cause theentire assembly above the base plate 15 to be displaced relative to thebase plate by an amount proportionate to the displacement of the studsin the slots. In a similar fashion horizontal displacement perpendicularto the movement described is effected by a corresponding mechanismcomprising a segment 79 a sprocket 80 and pair of slots 69 and the chain81 for the pair of eccentrics. This eccentric mechanism, 82, operates ina manner similar to that for the other eccentric effecting relativedisplacement of the housing above the base plate 15.

Manual positioning of a core 42 for initiating operation of the machineor for positioning a core during a winding operation is effected by thehand wheel 11 (FIG. 5) rotating a shaft 131 carried on bearings 132 andsplit to provide a disconnection between the two bearings. On one end ofthe shaft segment, 134, is provided a pin 133 for engagement in theslotted end of shaft 131 having a socket therein to cause disengagementof the pin from the slot when expansion pressure is inserted axially onshaft 131. Bevel gear 135 on the opposite end of shaft 134 is in meshwith bevel gear 136 which in turn is in mesh with ring gear 125 on shaft126. Thus when pin 133 engages the slot of shaft 131 rotation of thehand wheel 11 rotates gear 125 and thus the resulting gear chain iscaused to rotate the roller assembly 24 and 22 as desired.

A winding head 18 FIG. 2 consists generally of a frame plate 19articulated for opening about pivot 19F whereby the upper portion 19Emay be raised to remove if desired the magazine and gear assembly ridingon the rollers. The usual ring gear 45 and magazine 44 for carryingeither wire strand or tape are carried on four roller assemblies one ofwhich is illustrated in detail in FIG. 8. The roller assemblies comprisea roller 178 riding on shaft 180 journalled within shaft 181 which inturn carries roller 179 both bolted to the frame plate 19. Roller 178 isprovided with a recess for carrying one flange of the magazine 44 androller 179 is peripherally recessed to receive the ring gear 45. Nut 182is provided to adjust the position of roller 178 on its shaft 180whereby various widths of magazine types may be received thereon.

Wire guide roller 43 illustrated in detail in FIG. 9 is carried on shaft185 journalled in stationary sleeve 184. Helical groove 186 guides thearm of lever 187 attached to the end of shaft 185 in the path indicated.A spring 188 maintains a compression force on lever 187. In operationthe manual lever 187 is rotated through helical groove 186 causing theguide roller 43 to be displaced in an oscillating fashion over themagazine recess 44 whereby wire guided in the V-recess of the roller 43is laid within the recess of the magazine according to the will of theoperator.

For winding heads designed for tape rather than wire or strand, theoscillating guide roller is unnecessary since the tape is piled onelayer over the other in a radial fashion in a magazine such as 44.Accordingly there is no need to guide the tape across the recess. Forsuch winding heads I provide a pin or the like not shown locatedgenerally in the same location as the roller 43 whereby the tape isguided thereover into the magazine.

The means for rotating the shuttle gear 45 is best seen in views of themachine illustrated in FIGS. 2 and 7. Shuttle gear 45, supported onroller 179 (FIG. 8) is of the usual well known type provided withperipheral teeth for engagement with gear 164 within the gear boxhousing 48. A slot of sufficient size is provided in the face of thehousing toward the gear to allow the two gears to engage. The gear box48 is included in the winding head assembly 18 which is interchangeablewith other similar winding heads differing in size with wire or tapehandling capability. The entire winding head is connected to the base ormachine proper by three bolts 19A, 19B, and 19C (FIG. 2). When thewinding head is removed from the machine proper by disconnection of thethree mounting bolts, the power means connecting the main power sourcesuch as the motor as in housing 10, is decoupled by the magnetic clutchto be described.

Power for driving the shuttle gear is obtained by means of a belt drive150 (FIG. 7) driven by a reversible power source such as an electricmotor and belt with reversible gear box of any well known type mountedin the lower portion of the machine. Belt 150 is carried over pulley 152on shaft 154 through bearing block 156 and connected to anelectromagnetic clutch unit 158. The magnetic clutch is of any suitabletype well known in the art and is magnetically connected to mating platemember 150 journalled on shaft 160, which in turn is journalled onhearing plate 169 of the winding head 18 structure.

Gear 162 (FIG. 2) engages gear 164 in turn engaging shuttle gear 45.Pinion gear 166 on the same shaft as gear 164 engages gear 168 carriedon shaft 170. Shaft 170 terminates in a magnetic clutch plate 172 ofsimilar design as plate 159 for magnetic connection to a tachometer 174which in turn is structurally supported by hearing block 175. Tachometer174 indicates the speed of shaft 170 which in turn indicates, or may becalibrated to indicate, the speed of shuttle gear 45. The output oftachometer 174 is connected in the usual manner by electrical leads to atachometer indicating device located on the machine for viewing by theoperator but not shown in this embodiment. The direction of rotation ofthe gear train depends upon the direction of the movement of belt 150which is reversible as above indicated. In operation the direction ofrotation of shuttle gear 45 is selected for the phase of operation forwhich it is needed as will be explained. A switch, for example, on thecontrol panel 13 will be made operative to change the direction of belt150.

It will be noted that the cover of the gear housing 48 is open faced inthe portion covering the magnetic face plates 159 and 172 tosufficiently overhang same so that when stored the face plates areprotected from accident.

I provide in the base plate 15 (FIG. 7) a wear plate 171 of steel orother extremely hard material as the support for the lower portion offrame plate 19. Because of the strict and accurate requirement ofprecise location of winding head 18 over repeated usage, I havediscovered that the wear plate 171 advantageously minimizes difficultiesthat would tend to arise if a plate of the usual materials such asaluminum were used.

As known in this art, during the winding operation in which the wirestrand or tape is taken from the magazine and coiled on to the core 42,the magazine 44 is freely rotated within the guide roller 178. In orderto accurately control the drag force needed for the wire or strand beingused and for the speed of operation selected, my brake is provided forprecise adjustment of drag and for rapid disengagement of the brake fromthe magazine if such a requirement arises. The brake assembly 31 ismounted on winding head 18 generally as indicated in FIGS. 1 and 2, andillustrated in greater detail in the enlarged view of FIGS. 12 and 13.The brake assembly is mounted on frame member 19 by nuts and bolts 108and 110.

Brake shoes 107 are disposed on the inner and outer surface of magazine44 and provided with the usual brake mounting material for frequentengagement with the magazine. Shoes 107 are pivotedly connected to links104 about pivots 106, links 104 pivoting about connections 105. The endof links 104 are provided with cam surfaces 103 upon which ride pins 102on the respective ends of shaft 101. Shaft 101 is journalled forrotation by lever 100. Operation of lever causes the brake shoes to bereleased away from the surface of the magazine 44. The tension of thebrake shoe is controllably adjusted by rotation of attached knob 112which adjusts the compression of spring 114. Indicator 116 reflects thecompression position of the spring 114 and is calibrated to indicate therelative force of the brake for the operators convenience.

I provide means for counting the number of turns that are applied to thecore by means of the photocell counter indicated in detail in FIGURE 10as seen along section lines 1010 of FIG. 2. The unit comprises aphotocell means for detecting the passage of material being wound acrossthe gap of the frame member 196 which is mounted to the frame plate 19in a suitable manner. The frame 196 has a photo-electric cell 198excited by an exciter lamp 200 mounted in the respective ends of thegap. Electrical connections 202 connect the unit to the usual amplifiersand indicators. The photocell is energized by light 200 and passage ofmaterial across the path carried by each loop wound on the core breaksthe exciting circuit which results in a count recorded in the usualreadout counter which may be located on the machine such as in controlpanel 13 (FIG. 1).

The length of material being supplied for loading by winding on themagazine is measured by means of the counting mechanism ilustrated inFIG. 11. The unit is mounted on column 28 and may be adjusted for anyposition depending upon the kind or size of winding head being used byclamp lever 208. Material passing over roller spool causes its shaft 212attached thereto to rotate and in turn rotate pin 214 carried on theshaft. A pad 206 mounted on bracket 218 in the path of the material ispositionable by thumb screw 216. Pin 214 breaks the photocell light pathwithin the structure 210 to count the rotations of the shaft. Thecounting mechanism is calibrated to reflect distance by the computationof the circumference of the spool 190 as the constant of proportionalitymultiplied by the number of rotations refiected by the count of thephotocells. The output of the counter may be used to be read directly ona meter on panel 13 or may be used to energize a reset counter theoutput of which is used for stopping the machine or for cutting apredetermined length of material as, for example, will be described inanother feature of this embodiment.

Referring now to FIG. 17 there is shown in schematic form a means forcutting material to be Wound on a core and is particularly useful fortape. This automatic cutter is mounted on the machine as indicatedgenerally by reference numeral 259 in FIG. 1. Tape 282, for example, iscarried from a supply spool 46 over a length counter spool such as spool190 illustrated in FIG. 11, over a guide plate not shown between a pairof tension rollers 260 and 262 and across the knife blades 266 and 264.The knife blades are pivoted for closure by the force of roller 274carried on pivoting arm 272 when energized by solenoid 268. Compressionspring 270 is disposed to effect force on the blades against closure. Inother words the acting force of solenoid 268 closes the knife blades 264and 266 against the force of spring 270. A dog ratchet holder 276connected perpendicularly to upper knife blade 264 is in engagement withratchet Wheel 278 which in turn is carried by shaft 280 connected toupper tension roller 260. Leaf spring 284 is disposed to prevent reverse(counterclockwise) motion of ratchet 278. In operation the automaticcounter is energized manually or automatically to cause solenoid 268 tosnap the knife blades closed thereby cutting the tape material. Uponopening the knife blades, dog 27d rotates ratchet wheel 278 clockwise,rotating tension roller 260 clockwise to advance the tape 282 asutficient distance to ride over knife blade 266. Thus the operator neednot be concerned about finding the end of the tape since it will alwaysbe available at the point of cutting.

For large cores beyond the capacity of the above described machine Iprovide an extension means as illustrated in FIGS. 14 through 16representing the extension portion 26 shown in part in FIG. 1. Theextension bracket 228 is mounted to the housing 16 by bolts 230 afterhand wheel 40 has been removed from the main housing, as well as theupper portion of the main tension roller assembly illustrated in FIG. 6.The column 20 is removed, for example, by removal of the retaining ring146. The same handle is used on the extension table in the positionshown in FIGS. 14 and 15 serving the same function as that describedabove with respect to the positioning of the tension roller carriage. Itis to be noted that in greater detail there is illustrated the tensionroller carriage 234 having four wheels 238, for riding on lower andupper tracks 252. The threaded shaft 236 rotated by wheel is journalledwithin the lower portion 244 of the carriage passing through a recessportion carrying nut 254 and spring 240. \Vithin this recess 242 arelative displacement of the carriage is allowed by the longitudinaldisplacement of the nut 254 restrained from rotation by the walls ofrecess 242. Thus forces exerted radially on the tension roller assembly232 is absorbed by the spring 240 after a relatively smallerdisplacement. A pair of symmetrically disposed roller supports 220 and222 are connected to the bracket 228 by horizontal shafts 246 and 248axially attached by wing nuts 224 and 226. Thus with the extension tableadded to the main housing of the machine there are five roller supportpoints provided for a large core, the rotation of the core beingeffected as before by the driver roller assemblies rotated by columns 22and 24.

In operation, the winding machine serves to wind tape or wire in thewell known manner on a toroidal core. Briefly, a strand of wire or tapeis taken from a supply spool such as 36 or 46 and carried over the guideroller 43 or equivalent pin, back onto the magazine and the end fixedthereto. A link rigidly connects the magazine 44 to shuttle gear 45. Thegear 45 is caused to rotate clockwise as viewed in FIG. 1 to load themagazine with the desired length of material. The core, already in placein the well known manner of breaking the shuttle gear and magazine, hasconnected to it one end of the material. The link between the magazineand gear is removed and the usual guide eyelet and roller riding on themagazine but driven by the shuttle gear carries the material from themagazine onto the core as the shuttle gear is rotated in acounterclockwise direction. The machine now t operates in the well knownmanner of rotating the core 42 as the strand or tape is wound thereon.When a selected number of turns has been applied to the core the machineis stopped manually or automatically according to the means providedtherefor.

When it is desired to remove the winding head 18 to replace it with awinding head of similar design but of different material handlingcapability, whether wire or tape, the magnetic clutch connections 172,174 and 159, 158 are de-energized, and, simply on removal of bolts 19A,19B and 19C, the head can be removed from the machine.

I claim:

1. A toroidal coil winding machine comprising in combination a permanentplatform and an exchangeable transitory winding head, said platformhaving a plurality of core supporting pedestals, means for orientingsaid pedestals with respect to each other to support thereby any one ofa plurality of different size cores, manually operable slidable platformmeans for orienting said pedestals conjointly with respect to saidplatform whereby a core supported by said pedestal is manuallyposItionable relative to said head, said winding head having a splitring magazine, means for rotating said magazine, mounting means forallowing easy replacement of said head, including means fordisconnecting said magazine rotating means, means on said platform formeasuring the length of material to be wound upon a core, means forcutting the material at the measured length, and means for advancing theremaining end of said cut material.

2. A machine for winding material such as wire or tape upon closed coresor segments thereof, said machine having (a) a stationary housing (10)containing motor and gear means for reversibly rotating a first shaft(126) extending therefrom and reversibly rotating a second shaft (154)spaced over said housing (10);

(b) a stationary plate (15) fixed horizontally on said housing;

(c) a slidable plate (16A) horizontally mounted over said stationaryplate including manually operable means (74) for moving relative to saidstationary plate, said slidable plate in a horizontal plane;

(d) a plurality of core-support pedestals (20, 22, 24) mounted radiallyon said slidable plate and arranged to support a core in windingrelation;

(e) gear means (127, 130) coupling said first shaft to one of saidpedestals for reversibly rotating a core supported by said pedestals;and

(f) means for positioning said pedestals on said slidable plate tosupport a selected one of a plurality a different-sized cores, incombination with:

(g) a transitory toroidal coil winding head having a generally C-shapedframe plate carrying a plurali'y of magazine-supporting rollers, amagazine supported on said rollers and having a groove for carryingwinding material therein, and means associated with said magazine forremoving the winding material from the magazine and guiding saidmaterial on a core;

(h) means (19, 19A, etc) for mounting said head in winding relation oversaid slidable plate and adapted for easy and quick replacement of saidhead; and

(i) separable coupling means (158, 159) for operatively connecting saidsecond shaft to said head to reversibly rotate said magazine;

(j) said manually operable means for said slidable plate including twopairs of parallel slots (73, 78, 69) in said slidable plate (16A) eachpair being mutually perpendicular, and a stud slidable in a slot of eachof said slot pairs and fixedly connected to said stationary plate (15)on said housing (10), said stationary plate (15) slidably supportingsaid slidable plate (16A), said stud being mounted on the periphery of arotatable disc (75, 77, rotatably mounted in said stationary plate,whereby rotation of said disc effects linear horizontal movement of saidslidable pla'e relative to said stationary plate to simultaneously movethereby said pedestals as a group relative to said head.

3. A machine according to claim 2 including means (26) for laterallyextending the surface of said slidable plate for supporting core-supportpedestals (232, 222), means including a detachable bracket for mountinga second plurality of core-support pedestals and means for adjustablypositioning said pedestals whereby the coresize capability of saidmachine is increased.

4. A machine according to claim 2 including means for measuring thelength of material wound on the magazine, means for cutting saidmaterial automatically to a desired length, and means for advancing saidmaierial automatically after it has been cut.

5. A machine according to claim 2 including a manual operable leverassociated with each pair of slots for manual positioning of saidpedestals from one location to 9 another location along any desired pathby coordinated manual operation of said levers.

References Cited UNITED STATES PATENTS 2,721,708 10/1955 Rogers 242-42,726,817 12/1955 Barrows 242-4 10 Blumentritt 242-4 German 242-4Fordeck 242-4 Giuliano 242-4 Buralli 242-4 De Kraker et a1 242-4Fahrback 242-4 BILLY S. TAYLOR, Primary Examiner.

1. A TOROIDAL COIL WINDING MACHINE COMPRISING IN COMBINATION A PERMANENTPLATFORM AND AN EXCHANGEABLE TRANSITORY WINDING HEAD, SAID PLATFORMHAVING A PLURALITY OF CORE SUPPORTING PEDESTALS, MEANS FOR ORIENTINGSAID PEDESTALS WITH RESPECT TO EACH OTHER TO SUPPORT THEREBY ANY ONE OFA PLURALITY OF DIFFERENT SIZE CORES, MANUALLY OPERABLE SLIDABLE PLATFORMMEANS FOR ORIENTING SAID PEDESTALS CONJOINTLY WITH RESPECT TO SAIDPLATFORM WHEREBY A CORE SUPPORTED BY SAID PEDESTAL IS MANUALLYPOSITIONABLE RELATIVE TO SAID HEAD, SAID WINDING HEAD HAVING A SPLITRING MAGAZINE, MEANS FOR ROTATING SAID MAGAZINE, MOUNTING MEANS FORALLOWING EASY REPLACEMENT OF SAID HEAD, INCLUDING MEANS FORDISCONNECTING SAID MAGAZINE ROTATING MEANS, MEANS ON SAID PLATFORM FORMEASURING THE LENGTH OF MATERIAL TO BE WOUND UPON A CORE, MEANS FORCUTTING THE MATERIAL AT THE MEASURED LENGTH, AND MEANS FOR ADVANCING THEREMAINING END OF SAID CUT MATERIAL.